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Geometry

Angles and Lines

Intro

Concept Quizzes

Geometry Warmup - Angles and Lines
Basic Angle Chasing
Types of Angles
Complementary and Supplementary Angles
Parallel Lines
Perpendicular Lines
Patterns In Geometry
Angles and Lines - Problem Solving

Challenge Quizzes

Angles and Lines: Level 1 Challenges
Angles and Lines: Level 2 Challenges
Angles and Lines: Level 3 Challenges

Perpendicular Lines

If the vertical line is perpendicular to both of the horizontal lines, which of the following statements about the blue and purple angles is false?

They are equal They are complementary They are supplementary They are right angles

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by Brilliant Staff

If the blue and green lines are perpendicular, which of the following statements is true about the yellow and purple angles?

They are right angles They are equal They are complementary They are supplementary

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by Brilliant Staff

Given that $\angle a = 53^\circ$ and $\angle b = 37^\circ$ , which of the following statements are true:

I) $l$ and $m$ are perpendicular.

II) $l$ and $n$ are perpendicular.

III) None of the lines in this diagram are perpendicular.

Only statement III is true. Only statement II is true. Statements I and II are both true. Only statement I is true.

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by Brilliant Staff

If $l \perp m$ and $n \perp p$ and $\angle a = 31^\circ$ , what is the measure of $\angle b$ in degrees?

13 ^ \circ

31 ^ \circ

59 ^ \circ

90 ^ \circ

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by Brilliant Staff

What is the angle measure (in degrees) between 2 perpendicular lines?

30 ^ \circ

45 ^ \circ

90 ^ \circ

180 ^ \circ

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by Brilliant Staff